0035 SVITOLINA UNLOCKS KEYS TO ADVANCE

Fifth seed Elina Svitolina beat American Madison Keys 7-5 6-4 to reach the U.S. Open quarter-finals for the first time.

Keys hit seven aces, but made three times as many unforced errors as the Ukrainian, who will play Johanna Konta next.

0015 MEDVEDEV BEATS KOEPFER IN FOUR SETS

Fifth seed Daniil Medvedev bounced back after losing the first set to beat Germany’s Dominik Koepfer 3-6 6-3 6-2 7-6(2).

Both players made a high number of unforced errors, with Medvedev (45) slightly better than Koepfer (51) on that count, but the Russian served 15 aces to his opponent’s two and will face Novak Djokovic or Stan Wawrinka in the quarter-finals.

2115 BRYAN FINED FOR MAKING SHOOTING GESTURE WITH RACKET

Mike Bryan has been fined $10,000 for making a shooting gesture with his racket aimed at a line judge during a second- round doubles match on Saturday.

The 41-year-old American turned his racket upside down and pointed it at the judge after the official made a wrong call in the second set of his match against Roberto Carballes Baena and Federico Delbonis.

2000 SERENA TOO STRONG FOR MARTIC

Eighth seed Serena Williams fought through the pain of a twisted ankle which needed lengthy treatment to beat Petra Martic of Croatia 6-3 6-4 in the last 16.

The American former world number one scorched the court with 37 winners and will face China’s 18th seed Wang Qiang in the quarter-finals.

1940 DIMITROV BEATS DE MINAUR

Bulgaria’s Grigor Dimitrov beat Australia’s Alex de Minaur 7-5 6-3 6-4 to set up a quarter-final clash with Roger Federer.

Dimitrov won 79% of his first-serve points and hit 31 winners to reach the U.S. Open last eight for the first time.

1632 BARTY UPSET BY WANG IN STRAIGHT SETS

Second seed Ash Barty lost 6-2 6-4 to China’s 18th seed Wang Qiang, who advanced to her first Grand Slam quarter-final by dispatching the French Open champion in 82 minutes.

Wang claimed victory on her third match point after Barty had saved two on her own serve, but 39 unforced errors by the Australian, who did not convert a single break point, saw her make an earlier than expected exit in New York.

1510 PLAY UNDERWAY IN NEW YORK

Play began on Sunday in cloudy conditions with the temperature hovering around 22 degrees Celsius (71.6°F) and a forecast high of 25C, with rain expected later in the day.